Photoshop CS6 vs Photoshop CC. How difference?

How difference between photoshop cs6 and photoshop cc?
What subject (or book, photoshop cs6 - the missing manual, photoshop cc - the missing manual) should I go into if I am just a newbie in photoshop?
Sorry for my english. It's not my language.
Thank you.

The biggest difference between Photoshop CS6 and Photoshop CC is that Photoshop CC is subscription-based--you have to subscribe to Adobe's Creative Cloud service to use it. Also, Photoshop CC includes new features that were not in Photoshop CS6. You can learn about the new features here:
http://helpx.adobe.com/photoshop/usin...

It's up to you to decide which version of the program is best for you. Once you've made that decision, you can get the Missing Manual that matches your version of the program. Our books are designed to help readers of all skill levels, so they should be useful to you even though you're a Photoshop newbie.